Flashcards in Chapter 29 Deck (100)
what does body water depend on?
age and gender
what amount of the total body water does the intracellular fluid make up?
2/3 of total body water
what makes up 1/3 of total body water?
what is Edema?
Accumulation of IF which leads to tissue swelling
what causes lymph edema?
removal or blockage of lymph vessels that disrupts drainage
what does electrolyte balance usually refer to?
the most abundant cation in the ECF
what is calcitonin released in response to what?
increased calcium levels
what is PTH released in response to?
low calcium levels
total body water content of infants
total body water content of adults
solutes that dissociate into ions
why do electrolytes have greater osmotic power than non electrolytes?
they are much more numerous
the major anion of the ECF
what is the major cation inside cells?
what is the major anion inside cells?
what is the bulk of nonelectrolytes made up of?
the 2 main fluid compartments
fluid divisions of extracellular fluid with percents
interstitial fluid (80%)
what is fluid movement across capillaries determined by?
hydrostatic and colloid osmotic forces
what is fluid movement across cell membranes determined by?
the ability of a solution to cause water inflow into the cell or outflow of the cell
the number of solutes in 1 liter of solution
the number of solutes in 1 kg of solvent
3 mechanisms that help keep the pH within normal limits
chemical buffer systems
brain stem respiratory centers
what are salts important for?
controlling fluid movements
excitability of muscle and nerve cells
what effect do estrogens have on Na balance?
they increase Na re-absorption leading to water retention during the menstrual cycle and pregnancy